Tonneau Cover Having a Draw Cord

ABSTRACT

A tonneau cover assembly for attachment about a top of a perimeter of a cargo box of a pickup truck. The tonneau cover assembly including a cover, a support frame and a securing plate having at least one locking member. Preferably, the tonneau cover assembly includes two biased locking members interconnected by a draw cord. The draw cord preferably includes a clip that removably and adjustably secures the draw cord to a channel in the securing plate. The draw cord preferably includes a pull loop that at least partially extends through an opening in the cover.

RELATED APPLICATIONS

The present application is a continuation of U.S. patent applicationSer. No. 13,599,849, filed Aug. 30, 2012, which claimed benefit under 35U.S.C. 119(e) of U.S. provisional application Ser. No. 61/529,715, filedAug. 31, 2011, each of which are hereby incorporated herein byreference.

FIELD OF THE INVENTION

Tonneau cover assemblies, particularly, tonneau cover assembliesincluding a cover secured to a securing plate having locking members toengage the securing plate to side rails attached to sidewalls of thecargo box. The cover assemblies further including a draw cordinterconnected to the respective locking members.

DESCRIPTION OF THE RELATED ART

Numerous protective cover assemblies for preventing rain, debris andwind from damaging or disrupting the contents of a pickup truck bed arecurrently available. Some covers are made of some sort of fabric, oftena fabric coated with a polymeric material, which is detachablyfastenable to a rigid frame so as to enclose and protect the pickuptruck cargo box. The covering materials used are generally stretchableto the extent that once they are in a position to be secured, they arepulled taut and then attached to the frame by numerous methods such assnaps, grommets, or hook-and-loop fasteners, stretcher bars and thelike.

Typical protective cover assembly frames include a pair of elongatedside rails that are secured to the sidewalls of the cargo box. Knownside rails often include a component of hook or loop strip fastenersecured to the side rail, typically within a horizontal channel (see,e.g., U.S. Pat. Nos. 4,036,521; 4,991,640; 6,752,449 and U.S. PatentAppln. Pub. No. 2004/0212212 A1).

The present invention provides improvements which address limitationsassociated with the prior art.

SUMMARY OF THE INVENTION

A preferred embodiment relates to a tonneau cover assembly that includesa cover that can be operatively secured to two side rails, each of whichare secured to one of the respective sidewalls of a pickup truck cargobox. In preferred embodiments the sides of the cover are secured withmagnetic fastener elements for quick engagement. The magnetic fastenerelements can be of many different configurations and can include atleast one magnet positioned on each side of the cover and acorresponding ferromagnetic material on the respective side rails. Inalternate embodiments, it will be appreciated that this can be reversedby securing the ferromagnetic material, such as a strip of galvanizedsteel, to the cover and securing the magnets to the respective siderails. The side rail can be made of a ferromagnetic material, oralternatively, a ferromagnetic material can be secured to a receivingsurface on each side rail or preferably within a channel for receiving aslat made of ferromagnetic material or a slat to which ferromagneticmaterial is attached. In preferred embodiments, the tonneau cover of thepresent invention will include a tonneau cover assembly for securingover a cargo box of a pickup truck having two side rails for securing tothe cargo box; wherein the two side rails each include a receivingsurface and a ferromagnetic material located on the receiving surface;and a flexible cover having two sides and two ends; the flexible coverfurther including a plurality of magnets secured on each of the twosides; wherein each of the plurality of magnets removably secure theflexible cover to ferromagnetic material of each of the side rails;wherein each side rail will preferably include a channel having a firstedge and a second edge, the innermost edge preferably including a ridge;wherein the side rail is preferably inclined such that the innermostedge is higher than the outermost edge; wherein the respective magnetscan be secured against the respective ridge so that the respective ridgewill resist movement of the respective sides of the flexible cover inthe direction of the other side rail as the respective magnets slide upalong the surface of the channel and such that the ridge resists furthermovement of the respective magnets in the direction of the other siderail.

In further preferred embodiments, the tonneau cover assembly can includetwo securing plates or end plates attached to opposite lateral ends ofthe flexible cover. The front end plate is secured to the side rails ata forward end of the cargo box and the rear end plate is secured to theside rails at the tailgate end of the cargo box to form a securing framein a manner similar to that disclosed in U.S. Pat. Nos. 5,076,338 and6,543,835, each of which is incorporated herein by reference.

During development of the present invention, the inventor discoveredthat, when a preferred tonneau cover of the present invention is securedto the forward end and drawn over the top of the side rails, so that therear end plate can be engaged with securing plate engagement members oneach of the respective side rails, the magnetic fasteners can slidesomewhat with respect to the ferromagnetic material. This slidingprovides for horizontal adjustments of the flexible cover with respectto the side rails such that the cover can be tautly drawn over thesecuring frame when one end plate is secured to the side rails and theopposite end plate is engaged with respective side rails and pivotedinto the closed position. It will be appreciated that the appearance ofa flexible cover that is tautly drawn over a cargo box is desirable toconsumers and that a tautly drawn flexible cover diminishes thepossibility that rain water or snow will pool in low spots over themiddle of the cargo box with such flexible covers, which is alsobelieved to be undesirable. Furthermore, the ability of the cover toslide with respect to the respective side rails is beneficial as thismovement does not damage the magnetic faster, as would happen when thefastener is multi-directional hook and loop fastener or the like. Afurther advantage of embodiments of the present invention is that themagnetic fasteners automatically engage with the side rail, unlike thetraditional use of hook and loop fasteners, which sometimes require thatthe user run their hand along the hook and loop fasteners after thecover is draped over the cargo box in order to sufficiently engage thefasteners.

The side rails of this and other embodiments will preferably include atleast one retaining portion to retain a slat that can extend generallythe length of the side rail although the slot can be affixed withadhesives and does not require such a retaining portion. In preferredembodiments, the side rails will include two complimentary retainingportions on opposite edges of the respective wide rail. In preferredembodiments, the respective side rail will also have an inclined portionand at least one retaining portion proximate the top edge of theinclined portion. More preferably, there will be a retaining portionproximate each respective edge of the inclined portion. In preferredembodiments, the inclined portion will include a receiving surface andmay also include two retaining portions proximate each of the respectiveedges to define a channel. In preferred embodiments, the inclinedportion further includes a ridge extending generally along the length ofthe side rail proximate an innermost edge of the inclined portionclosest to a center of the cargo box, such that when the cover ispositioned over the cargo box, the magnets proximate each of therespective sides of the cover can be secured against the respectiveridges so that the respective ridges will resist movement of therespective sides of the cover in the direction of the opposinglongitudinal side of the flexible cover.

Other mechanisms for providing a magnetic strip or ferromagneticmaterials include at least one ferromagnetic insert or slat designed toreside in the channel with the first fastener component. Alternatively,a ferromagnetic material can be fastened to the receiving surface of theinclined portion with adhesives, screws, grommets or the like.

Further preferred embodiments include fastening systems including acombination of hook and loop fastener and magnetic fasteners. It hasbeen found that in such embodiments, magnets can be used to draw therespective sides of the cover down into the respective side rails so asto press the respective loop fastening element against the respectivehook fastening element, so that the respective fastening elements willengage effectively without the further need to run one's hand over thecover to engage the hook and loop fastening elements. This automaticengagement saves time and wear and tear on the hook and loop fasteningelements, thereby extending the useful life of the cover as many tonneaucover users do not take the time to engage the hook and loop fastenerelements properly, thus ultimately resulting in damage to the hook andloop fastener elements as well as potentially damaging the cover itselfif it were to suddenly flop open. In preferred embodiments, the hook andloop fastener elements would alternate along the length of the side railand/or the cover with magnetic fastener elements (i.e., magnets andferromagnetic materials to which the magnets will be attracted.)

In preferred embodiments having a cover that is secured to the siderails with a combination of hook and loop fasteners and magneticfasteners, the side rail does not necessarily have retaining portions, aridge or the like. In these embodiments, the hook and loop fastenersgenerally prevent the magnetic fasteners from sliding upwardly on aninclined side rail and the magnetic fasteners provide for some lateralmovement of the flexible cover such that wear and tear on the hook andloop fastener is still reduced. In even further preferred embodiments,the hook fastener is a directional hook fastener element having aplurality of hooks that generally all face the same direction such thatthe hook fastener will engage a corresponding loop fastener on theflexible cover or vice versa in only one direction. The directional hookfastener element is preferably arranged such that the hooks of thedirectional hook fastener will only engage in one direction. Inpreferred embodiments the directional hook fastener element is attachedto the respective side rail and it will preferably face the end of thecover proximate the tailgate such that the respective hooks are opentoward the tailgate. Alternately, the hooks are attached to the sides ofthe cover and the hooks will face (or be open toward) the front end ofthe cover proximate the front of the cargo box when the cover isattached to the truck.

Preferred tonneau cover assemblies further include an end plate having acord or strap interconnecting two spring biased locking members. Thecord further preferably includes a connecting portion, a loop having twoends that are connected to the connecting portion. The loop preferablyextends outwardly from the connecting portion and can be pulled to moveeach of the respective locking members from a first position in whichthe two respective locking members prevent the end plate fromdisengaging from the respective end plate engagement members proximateeach of the respective side rails to a second position in which the endplate can disengage from the respective end plate engagement members. Inpreferred embodiments the length of connecting portion is adjustable atone end where it is doubled over on itself and interconnected by a slipclip that can slide along the connecting portion of cord or strap sothat its length can be adjusted so that it can be used for differentsized tonneau covers without the need for different sizing options. Infurther preferred embodiments, the slip clip is connectable to the endplate.

These and various other advantages and features of novelty whichcharacterize the present invention are pointed out with particularity inthe claims annexed hereto and forming a part hereof. However, for abetter understanding of the invention, its advantages and objectsobtained by its use, reference should be made to the drawings which forma further part hereof, and to the accompanying descriptive matter, inwhich there is illustrated and described a preferred embodiment of thepresent invention.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings, in which corresponding reference numerals and lettersindicate corresponding parts of the various embodiments throughout theseveral views, and in which the various embodiments generally differonly in the manner described and/or shown, but otherwise includecorresponding parts;

FIG. 1 is a perspective view of one preferred tonneau cover assembly 10in a closed position;

FIG. 2 is a partial, perspective view of the tonneau cover assembly 10of FIG. 1 in a partially, open position; wherein a flexible cover 18 ofthe tonneau cover assembly 10 is rolled up exposing respective hook andloop and magnetic fastening elements 22, 24, 26, 44;

FIG. 3 is a partial, cross sectional view of the tonneau cover assembly10 of FIGS. 1-2 as viewed along line 3-3 of FIG. 1;

FIG. 4 is a partial, bottom view of a magnetic fastener connectorassembly 42′, the connector assembly 42′ including a magnet 44′ and aplastic enclosure 46′ secured to the flexible cover 18′; wherein aplurality of magnetic fastener connector assemblies 42′ can be securedto the tonneau cover assembly 10 of FIG. 1;

FIG. 5 is a cross-sectional view of the flexible cover 18′ and connectorassembly 42′ of FIG. 4 as viewed along lines 5-5;

FIG. 6 is a partial, perspective view of an end plate 70 that will besecured to the flexible cover 18 (not shown); the end plate 70 includingat least one locking member 100 and a cord 110; wherein the cord 110includes a loop 114 that can be pulled to actuate movement of thelocking members 100;

FIG. 7A is a partial, schematic view of the end plate 70 of FIG. 6having two locking members 100, wherein the locking members 100 arespring biased toward a locked position and can be drawn out of thelocked position against the bias with the cord 110 as shown in FIG. 7B;

FIG. 7B is a partial, schematic view of the end plate 70 of FIG. 6-7A,illustrating how the loop 114 of the cord 110 can be pulled away fromthe end plate 70 to draw the locking members 100 away from the siderails 32 against the bias toward the locked position, when the slip clip124 is slidably secured to the end plate 70 within the channel 77;

FIG. 8 is an alternate embodiment of a flexible cover 18″ in where theloop 114 of FIGS. 7A-B is threaded through a slit 120 in the flexiblecover 18″ proximate the later edge 14 at the tailgate 5 and held inplace with grommet 122;

FIG. 9 is a partial, perspective view of a band 130 having two strips ofplastic material 132, 134 encasing intermittently spaced magnets 136;

FIG. 10 is an alternate embodiment of a flexible cover 18″′ in which theband 130 of FIG. 9 is secured to an underside of the flexible cover18″′; and

FIG. 11 is another alternate embodiment of a flexible cover 18″″ inwhich the band 130 of FIG. 9 is secured between a fold in the flexiblecover 18″″, such that, once assembled, the band 130 is incorporated intothe respective sides 20″′ of the cover 18″″.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to the drawings, particularly FIGS. 1-3, there isillustrated a preferred embodiment of a tonneau cover apparatus 10attached to a pickup truck 2. The pickup truck 2 has a cargo box 4 atleast partially defined by two opposing sidewalls 6, a tailgate 5 (shownin a lowered position) and a front wall 3. The tonneau cover apparatus10 includes a cover 18. The cover 18 includes opposing longitudinalsides 20 and opposing lateral sides or ends 14, each of which ispreferably secured to an end plate 70. Although the cover can be a hardcover and can be a tri-fold or other type of cover in alternateembodiments, the preferred cover shown in FIGS. 1-3 is a flexible cover18. FIG. 1 illustrates the flexible cover 18 tautly draped over thecargo box 4 of the pickup truck 2 when the tonneau cover apparatus 10 isin a closed position. FIG. 2 partially illustrates a tonneau coverapparatus 10 in an open position when the flexible cover 18 is partiallyrolled up. As shown in FIG. 3, each outer sidewall 6 has a top surface 7and an inner surface 8. The flexible cover 18 is preferably constructedof somewhat resilient fabric material that is laminated to a polyestermaterial to give it strength, flexibility and water resistance.

The respective lateral sides 14 of the flexible cover 18 are preferablyattached to respective end plates 70 (only one end plate is shown) bysecuring a portion of the lateral end 14 in a channel 76 (see FIG. 6)from which an end flap 15 of the lateral end 14 will preferably extend.The flexible cover 18 can be secured to a side rail assembly thatincludes two side rails 32 that are secured to the respective sidewalls6 of the pickup truck 2 by securing the respective end plates 70 to theside rails 32 to form a securing frame, to which the respective endplates 70 are attached proximate respective ends of the cargo box 4,when the tonneau cover apparatus 1 is closed (see also, FIGS. 6-7B).Each side rail 32 preferably includes an inclined portion 38 having areceiving surface 48 that resides generally in an inclined plane that isconsistent with the receiving surface. The preferred side rail 32further includes a connecting member 40 that extends downwardly and awayfrom the inclined portion 38 at an angle of about 90° relative to theinclined plane.

Each of the preferred side rails 32, include a securing portion 34having an engaging surface 35 that is preferably secured to an innersurface 8 of a respective sidewall 6 with, for example, a series ofclamps 16 positioned along the side rail 32. Preferably, in embodimentswhere the securing portion 34 is secured to the respective sidewall 6with clamps 16, the securing portion 34 has a grooved surface 36 toenhance the grip of the clamp 16.

Referring now particularly to FIG. 3, showing the preferred side rail 32in lateral cross-section, the side rail 32 is arranged and configured inaccordance with the teachings of U.S. Pat. No. 7,815,329, the disclosureof which is hereby incorporated by reference.

In certain embodiments, the inclined portion 38 has a receiving surface48 and proximal and distal retaining portions 54, 56, that cooperate toform a channel 58. In various embodiments, only one retaining portion 56and/or a ridge 60 will be included proximate the top edge of thereceiving surface. In other various embodiments, as discussed herein,the retaining portions 54, 56 can be omitted. Within the channel 58 or,alternatively, simply on the receiving surface 48, magnetic fastenerscan be releasably secured for securing the cover 18 over the cargo box4. In preferred embodiments, the magnets 44 will be coated with orpreferably fully enclosed within a coating of a material that willeither prevent or at least minimize the degree to which the magnets willrust. In preferred embodiments, this material will be selected from thegroup consisting of paint, lacquer, epoxy, plastic, ceramic or the like.In preferred embodiments, the magnets are SWP-L or RX034DCSPC-BLKplastic coated magnets from K&J Magnetics, Inc. Alternatively,M34x18plasDI magnets from Apex Magnets, a division of Emovendo, LLC, canbe used. Preferred magnets will have a pull force magnet to steel plateof between about 5 to about 12 pounds, more preferably, between about 7to about 10 pounds.

One preferred tonneau cover assembly 10 includes corresponding hook andloop fastening elements 22, 24. In certain preferred embodiments, hookfastener 22 is secured to the longitudinal edges 20 of the cover 18 anda plurality of loop fastening sections or portions 24 are secured to thereceiving surface of the side rail 32. In other preferred embodiments,the hook fastener is secured to the receiving surface of the side railand the loop fastener is secured to the cover 18. In variousembodiments, the loop fastening element portions 24 can be secured to anupper surface 69 of a slat 68 that is inserted into the channel 58. Insuch embodiments, as are shown in FIGS. 1-3, the cover 18 can furtherinclude magnets 44 intermittently spaced on the first component of hookand loop secured to the cover 18. In such embodiments, the slat 68 willbe made of ferromagnetic material, such as steel, that will attract themagnets 44. In certain preferred embodiments (not shown) thecorresponding ferromagnetic material could be strips of material securedon the upper surface 69 of the slat 68 such that the magnets can securethe cover 18 to the respective side rails 32. In such embodiments, thestrip can be made of painted steel, galvanized steel or paintedgalvanized steel to protect against corrosion. Alternatively, thereceiving surface 48 of the side rails 32 can be made of a ferromagneticmaterial selected from a group consisting of steel, painted steel,galvanized steel, plastic coated steel and the like. In the mostpreferred embodiments, the magnets 44 and/or ferromagnetic material arerust resistant, either because the magnets are coated or encased withinpaint, lacquer, plastic, ceramic or the like.

In various preferred embodiments, as illustrated in FIGS. 1-3, themagnetic fasteners 44 preferably include an aperture 45 which allows themagnets 44 to be secured to the cover 18 with respective caps 90. Thepreferred cap 90 includes a head 92, a connecting portion 94 and adistal portion 96, wherein the connecting portion 94 connects the distalportion 96 to the head 92 and the distal portion 96 has a largerdiameter than the connector portion 94 so that the distal portion 96cannot pass through the aperture 45 in the magnet 44, allowing the cap90 to secure the magnet 44 to the respective side 20 of the cover 18. Tosecure the magnet 44 to the cover 18, the connecting portion 94 isinserted through the aperture 45 in the magnetic fastener 44 before theend of the connecting portion 94 is enlarged (the connecting portion 94is not shown before the distal portion is enlarged) and the distalportion 96 is then compressed against a forming device (not shown) suchthat distal portion flares out and retains the magnetic fastener 44 onthe flexible cover 18 in a manner similar to the way a grommet is usedto secure separate parts together.

In alternate preferred embodiments, as generally illustrated in FIGS.4-5, the magnetic fasteners 44′ are secured to the cover 18′ byproviding a connector assembly 42′ including a magnet 44′ enclosed in aplastic enclosure 46′. Each longitudinal edge or side 20′ of the cover18′ is preferably folded over to reinforce the edge 20′, then aplurality of connector assemblies 42′ are heat or radio frequency (RF)welded to the bottom side of the folded cover edge 20′ to secure theconnector assembly to the bottom side of the cover 18′. It will beunderstood that the connector assembly 42′ can be secured to the cover18′ in many other ways including adhesive and sewing, for example. Aswill also be understood, the plastic enclosure 46′ and the magnets 44′are preferably selected such that the magnets 44′ will be able to securethe cover 18′ to the respective side rail 32 (see, FIG. 2). In yet otheralternate embodiments (not shown), the magnets can be secured thereceiving surface of the side rail and small strips of ferromagneticmaterial can be secured to the respective sides of the cover, preferablysewn into the respective sides of the cover or slipped into pockets sewninto the respective sides of the cover. In these instances, the magnetsand the strips of ferromagnetic material can be alternated will hook andloop fasteners so that the respective sides of the cover will bealternately secured to the receiving surface of the respective siderails by a magnet attaching to a ferromagnetic strip and a hook or loopfastener attaching to a reciprocating hook or loop fastener. In theseembodiments, the cover 18′ is preferably one that is flexible and madeof vinyl.

As shown in FIG. 3, a ridge 60 can be used in conjunction with theretaining portions 54, 56 to secure the magnetic fastener 44, 44′ withinthe channel 58. It will be appreciated that ridge 60, retaining portions54, 56 and channel 58 will not be necessary and can be omitted from siderail 32 if magnetic fastening elements (i.e. ferromagnetic material orstrips of material 26 and the magnets 44, 44′) are used in combinationwith reciprocating hook and loop fastening elements 22, 24. The hook andloop fastening elements 22, 24 will provide some resistance to preventthe magnets 44, 44′ from sliding upward with respect to the slant of theside rail receiving surface, or toward the center of the cover, and offof the side rail 32. In such embodiments, the magnetic attraction of themagnets 44, 44′ to the ferromagnetic material 26 has gripping power tohold the magnets 44, 44′ to the ferromagnetic material 26, but themagnet 44, 44′ can slide along the surface of the ferromagnetic material26 and will do so if force is applied to the cover 18 that is sufficientto drag the respective magnet 44 along the surface of the ferromagneticmaterial 26. This can result in disengagement of the magnets 44 from theferromagnetic material because it is easier for the magnets to slide tothe edge of the ferromagnetic material and then off of it than it is topull the magnets directly away from the ferromagnetic material at aninety degree angle to the surface of such a material. The use ofreciprocating hook and loop fastener elements 22, 24 in conjunction withmagnetic fastening elements 26, 44, 44′ creates a synergy between thetwo respective sets of fastening elements, wherein the magnets 44, 44′have great attractive power to draw the sides of the cover against therespective side rails when the respective side rails includeferromagnetic material 26. As mentioned above, the magnets will slidealong the surface of such material and even off of the surface if themagnet is not prevented from doing so, but the reciprocating hook andloop fastener elements will act to prevent the magnets from sliding, butdo not have the attractive gripping power of the magnets for theferromagnetic material. The combination of the magnetic fasteningelements and the reciprocating hook and loop fastener elements adds asynergy to the system for securing the sides 20 of the cover 18 to therespective side rails 32, because the magnets draw the reciprocatinghook and loop fastening elements together without requiring force fromthe outside to move them together and, as mentioned, the hook and loopfastening elements prevent the magnets from sliding along the surface ofthe ferromagnetic material, as the magnets would do were it not for thehook and loop fastening elements that prevent this sliding. In this way,the owner is not required to press the edge of the cover down onto theside rail to force the respective hook and loop fastening elements toengage one another as traditional roll-up cover owners have had to do inthe past in the absence of the force of magnetic attraction that theinventor has discovered will address this issue. Similarly, the hook andloop fastening elements will work together when engaged to prevent themagnetic fastening elements from sliding with respect to one anotherwhen the magnetic fastening elements are engaged.

It will be appreciated that this synergy, between the use of bothmagnetic fastening elements (i.e., magnets and ferromagnetic materials)and hook and loop fastening elements will be helpful, especially when analternate side rail (not shown) is used that does not have a channel orridge retaining portions. While these aspects such as the retainingportions 54, 56 of the preferred side rails shown in FIGS. 1-3 aredesirable to secure a slat 68, they are not required if both themagnetic fastening elements and the hook and loop fastening elements areused together or in conjunction with one another.

In one preferred embodiment, the channel 58 can be used to secure theslat 68, which can be made of ferromagnetic material or can retaineither a strip of ferromagnetic material 26 (not shown) on its uppersurface 69 or a strip or component of reciprocating hook and loopfastener 22, 24 or a combination thereof on such surface. The slat 68can be secured to the receiving surface 48 with an adhesive, solder,rivets, grommets, screws or the like, or it can be sized to friction fitin the channel 58. Alternatively, the ferromagnetic material 26 andcomponent of hook and loop fastener 22, 24 can be secured eitherdirectly to the receiving surface 48 or to the slat 68. In alternateembodiments, the slat 68 can be made of a ferromagnetic material and notinclude any element of hook and loop fastener, in which case the hookand loop fastener would not be present to prevent the respective magnets44, 44′ from sliding along the upper surface 69 of the slat 68. If thereare no hook and loop fasteners, it is possible that the magnets willslide off of the slat 68 or the receiving surface 58, unless the siderail has a retaining portion 56 or a raised ridge 60 to abut against themagnets 44, 44′ to prevent the magnets 44, 44′ from sliding upward onthe inclined side rail 32. The retaining portion 56 or ridge 60 can holdmagnetic fasteners 44 in place and prevent such magnetic fasteners frommoving upwardly with respect to the inclined portion 38 of the side rail32. For instance, as shown in FIG. 3, if the wind or a heavy objectcauses the cover 18 to pull away from the side rail 32, the magnet 44will abut against the ridge 60 of the retaining portion 56, which willlargely prevent the sides 20 of the cover 18 from sliding upward withrespect to the incline of the side rail receiving surface. It will beappreciated that the preferred side rail 32 shown in partialcross-section in FIG. 3 is an aluminum extrusion and as such is notferromagnetic. The combination of a ferromagnetic slat 68 and analuminum or other non-ferromagnetic side rail is believed to bedesirable in order to limit the magnetic attraction of the magnets 44,44′ to the slat 68 or to any strips of ferromagnetic material (notshown) on either the upper surface 69 of such a slat or on the receivingsurface 58 of the preferred side rail shown in FIG. 3

Preferred tonneau cover assemblies 10 include at least one supportmember or bow (not shown) that supports the cover 18, for an example,see U.S. Pat. Nos. 5,076,338; 6,543,835 and 7,815,329, the disclosure ofwhich is hereby incorporated by reference.

A bottom view of an alternate attachment system is illustrated in FIGS.4-5. In this embodiment, the cover 18′ includes a plurality of connectorassemblies 42′ each including a magnet 44′ and a plastic enclosure 46′.In preferred embodiments, there is one connector assembly 42′ for aboutevery 6 to about 8 inches. However, preferably the plastic enclosure 46′fully encloses the respective magnet 44′ and provides enough surfacearea to connect the enclosure 46′ to the cover 18′. The side rails 32(see FIGS. 1-3) are preferably configured as illustrated in FIGS. 2-3and but for having a slat that only includes a ferromagnetic material toengage the magnets of the connector assemblies to secure the flexiblecover to ferromagnetic material of the side rails. It will be understoodthat the use of a slat in the channel is not necessary and that thereceiving surface of the side rail can be made of a ferromagneticmaterial.

To secure the end plate 70 to the side rails 32, the side railspreferably include a strike or engagement member as are disclosed inU.S. Pat. Nos. 5,076,338 and 6,543,835, the disclosures of which ishereby incorporated by reference. The front end plate (not shown) may besecured to the respective side rails 32 in a similar manner to thatdescribed for the rear end plate 70 or in a manner similar to thosesystems described in U.S. Pat. Nos. 5,076,338 and 6,543,835, each ofwhich has been incorporated herein by reference.

Now also referring to FIGS. 9-10, which illustrate further preferredembodiments. As shown in FIG. 9, a band of material 130 has magnets 136intermittently spaced along its length. In one embodiment illustrated inFIG. 10, the band 130 is preferably sewn onto an underside of a flexiblecover 18″′ along each latitudinal edge or side 20″. In such embodiments,the band 130 is preferably made of two strips of flexible plasticmaterial 132, 134 with magnets 136 intermittently spaced therebetween,preferably from about 4 to about 6 inches apart. The magnets 136 can besecured between the strips of flexible plastic material 132, 134 andsecured in place by heat welding or the like. When the magnets 136 arewelded to strips flexible plastic material 132, 134, the weld willtypically result in a weld section 138 in where the strips of flexibleplastic material 132, 134 are joined. It will be appreciated that theband 130 may be made of fabric, vinyl or mesh materials, as desired, andalso that the magnets may be secured in a variety of ways includingwelding, sewing, snaps, glue and other fastening methods.

Similarly, the embodiment of FIG. 11 illustrates a flexible cover 18″″having a band 130 with a plurality of magnetic fasteners 136 securedthereto, spaced preferably about 4-6 inches (only one magnet is visiblein this view). The band 130 is positioned within a fold section 21 ofthe flexible cover proximate each longitudinal side 20″′ and then thefold section 21 is generally sealed to enclose the band 130 by welding,sewing or the like. Both of the embodiments of FIG. 10-11 are preferredas they provide corrosion resistance as each magnet 136 is enclosed in awater resistant material (e.g. strips 132, 134). It will also beappreciated that the placement of magnetic elements may be swapped outfor one another in alternate embodiments.

Now also referring to FIGS. 6-7B, which illustrate a preferred end plate70 that is used to secure the one end or lateral side 14 of the flexiblecover 18 to the cargo box 4. As shown in FIG. 6, the end plate 70includes a distal edge 72 having a first channel 76, in which a portionof the lateral side 14 of the cover 18 is secured (not shown, see flap15 at the distal end of the lateral side 14 that is secured in channel76 (not shown) so that the flap 15 extends down from the end plate toproximate channel 76 in the embodiment shown in FIG. 8). The end plate70 preferably also includes a second channel 77, which is sized toslidingly receive at least one locking member 100, preferably oneproximate each of the respective ends to the end plate 70, each of whichis spring biased toward a closed position in which a respective extendedfinger 101 of the respective locking members 100 reside in a positionshown schematically in FIG. 7A, in which the extended fingers 101 extendbelow an extended portion 40 of the respective side rails 32. Thelocking member 100 can be of the type disclosed in U.S. Pat. No.6,534,835, the disclosure of which is incorporated herein by reference.In preferred embodiments, the locking member 100 will be biased towardan extended position shown in FIG. 7A by a spring 103 that is secured tothe end plate 70 by an elongated spring engaging member 105 that allowsthe spring 103 to compress. In preferred embodiments, the second channel77 is generally T-shaped and will generally extend the entire length ofthe end plate 70 and a second locking member 100 will be slidinglyretained in the channel 77 at the opposite end. When the end plate 70 isrotated or pivoted into a closed position against a pair of end plateengagement members (not shown) on the respective opposing side rails 32,only one of which is shown, a peak or crest 84 of the end plate 70contacts a pivot point (not shown) of the engagement member or strike(see, for example, U.S. Pat. Nos. 5,076,338 and 6,543,835, thedisclosures of which are each hereby incorporated herein by reference).

Various preferred embodiments discussed herein can utilize directionalhook fastener (not shown) in place of traditional hook fastener 24.Directional hook fastener includes a plurality of hooks that generallyall face the same direction, unlike traditional multi-directional hookfastener that has a plurality of hooks facing multiple directions suchthat the hooks will engage loop fastener from all angles. In preferredembodiments, the directional fastener is positioned on the receivingsurface 46 such that the hooks are uniformly facing the tailgate 12 whenthe side rail 32 is operatively attached to the sidewall 6. In thisposition, the hooks will generally not engage the component of hook andloop fastener 22, in this case loop fastener on the cover 18, as theflexible cover 18 is being pulled over the cargo box 4 towards thetailgate 12 (see, in particular, FIGS. 2-3). Use of such directionalhook fastener reduces the wear and tear of the components of directionalhook fastener and corresponding component of loop fastener 22 on thecover 18. Directional hook fastener can be made, for example, inaccordance with the teachings of U.S. Pat. Nos. 7,172,008 (Vanbenschotenet al.); 6,640,348 (Clune et al.); or 6,258,311 (Jens et al.), thedisclosures of which are herby incorporated herein by reference.

The preferred magnets 44, 44′ have a holding strength of at least about5 pounds, more preferably at least about 10 pounds. The use of magnetsin the various embodiments described herein is preferred as compared tohook and loop fastener because magnets work better in wet and coldweather. In wet weather, hook and loop fastener gets slippery and incold weather, hooks are more likely to break.

Preferred tonneau cover assemblies further include an end plate 70having a cord or strap 110 interconnecting the two spring biased lockingmembers 100. The cord 110 further preferably includes a connectingportion 112, a loop 114 having two ends 116, 118 that are connected tothe connecting portion 112. The loop 114 extends outwardly from theconnecting portion 112 and can be pulled to move the each of therespective locking members 100 from a first position in which the tworespective locking members prevent the end plate 70 from disengagingfrom the respective end plate engagement members (not shown) to a secondposition in which the end plate can disengage from the respective endplate engagement members (not shown) as disclosed in U.S. Pat. Nos.5,076,338 and 6,543,835, the disclosures of which are herebyincorporated herein by reference. In preferred embodiments the length ofconnecting portion 112 is adjustable at one end where it is doubled overon itself and interconnected by a slip clip 124 that can slide along theconnecting portion 112 of cord or strap so that its length can beadjusted so that is can be used for different sized tonneau covers. Theamount that the pull loop 114 hangs down is preferably not adjustable bythe user, however. The distance between one end 116 of the pull loop 114and the other end 118 of the pull loop, where the respective ends areattached to the connecting portion 112 is preferably from about 6 toabout 10 inches in length, more preferably from about 7 to about 9inches in length, even more preferably about 8 inches in length. At eachend of the cord or strap 110 there is a connector 119, preferably a wireloop, that interconnects the respective ends of the cord 110 to therespective slide locks 100. In other various preferred embodiments, areinforced slit 120 can be cut or formed in a portion of the cover 18″that extends out of and beyond the first channel 76, such that a portionof the pull loop 114 can extend out the slit 120 for easy access to theloop 114. In such embodiments, the loop 114 will preferably include agrommet 122 or the like to secure the loop 114 within the slit 120 sothat the portion of the pull loop 114 that extends out beyond the slit120 will remain there and not slip back through the slit 120 so as to nolonger be accessible proximate the slit 120. In further preferredembodiments, the cord 110 will include a clip 124 that can be insertedwithin the channel 77 to further secure the cord 110 to the end plate70. The clip 124 is preferably held in place on the cord 110 by a clipretaining strap 111 that is secured to the connector 112 on each side ofthe clip 124 so that the clip cannot migrate any significant distancealong the cord 110. The clip 124 is designed to be force fit into thechannel 77, but to be released from the channel 77 relatively easilywhen significant force is used to pull on the cord 110. In this way, theclip 124 will be the “weak link” so that the connection between the clip124 and the end plate 70 will fail before significant force is placed onother connection points between the respective slide locks 100. If theclip 124 fails and pops out of the channel 77, it can be easily snappedback into place in the channel.

It is to be understood, however, that even though numerouscharacteristics and advantages of the present invention have been setforth in the foregoing description, together with details of thestructure and function of the invention, the disclosure is illustrativeonly, and changes may be made in detail, especially in matters of shape,size and arrangement of parts within the principles of the invention tothe full extent indicated by the broad general meaning of the terms inwhich the appended claims are expressed.

What is claimed is:
 1. A tonneau cover assembly for removable attachment about a top of a perimeter of a cargo box of a pickup truck, the perimeter of the cargo box including a forward end, two opposing sidewalls and a tailgate, the tailgate being positioned rearward of the forward end and having an open position and a closed position, the tonneau cover apparatus comprising: a cover; a support frame for attachment to the cargo box, the support frame having two opposing side rails, each of which can be secured to one of the respective opposing side walls; and a securing plate having first and second ends, the securing plate being attached to the cover, the end plate being engageable with the respective side rails to secure the cover to the support frame; wherein the securing plate includes a channel and a locking assembly, the locking assembly including two locking members positioned at least partially within the channel and a draw cord having a connecting portion interconnecting the two locking members; wherein the draw cord further includes a pull loop having two ends, each of the respective ends being connected to the connecting portion; wherein the securing plate is prevented from disengaging from the respective side rail when each of the respective locking members are in a first position and the securing plate is secured to each of the respective side rails; wherein the locking members are biased toward the first position; and wherein the end plate can disengage from the respective side rails when each of the respective locking members are in a second position; wherein each of the respective locking members can be moved from the first position to the second position by pulling the pull loop away from the securing plate.
 2. The tonneau cover assembly of claim 1, wherein the cover is flexible.
 3. The tonneau cover assembly of claim 1, wherein the pull loop extends through the cover proximate the securing plate.
 4. The tonneau cover assembly of claim 1, wherein each of the respective locking members are biased with a spring.
 5. The tonneau cover assembly of claim 1, wherein the respective ends of the pull loop are connected to the connecting portion at spaced apart locations.
 6. The tonneau cover assembly of claim 5, wherein the pull loop has a length of from about 6 to about 10 inches.
 7. The tonneau cover assembly of claim 1, further comprising two loops that interconnect the respective ends of the cord to the respective slide locks.
 8. The tonneau cover assembly of claim 7, wherein a length one of the loops is adjustable so that a length of the cord is adjustable.
 9. The tonneau cover assembly of claim 1, wherein the cord further includes a clip that can secure the cord to the securing plate proximate the channel.
 10. The tonneau cover assembly of claim 9, wherein the clip can be deformed so as to be force fit force fit into the channel.
 11. The tonneau cover assembly of claim 9, wherein the draw cord includes a clip retaining strap which having two ends, each of the two ends being connected to the draw cord in spaced apart locations so that the clip is unable to slide away from its initial position along the draw cord beyond either of the two spaced apart positions.
 12. A tonneau cover assembly for removable attachment about a top of a perimeter of a cargo box of a pickup truck, the perimeter of the cargo box including a forward end, two opposing sidewalls and a tailgate, the tailgate being positioned rearward of the forward end and having an open position and a closed position, the tonneau cover apparatus comprising: a cover; a support frame for attachment to the cargo box, the support frame having two opposing side rails, each of which can be secured to one of the respective opposing side walls; and a securing plate having first and second ends, the securing plate being attached to the cover, the end plate being engageable with the respective side rails to secure the cover to the support frame; wherein the securing plate includes a channel and a locking assembly, the locking assembly including two locking members positioned at least partially within the channel and a draw cord including a connecting portion interconnecting the two locking members; wherein the draw cord further includes a clip that can secure the cord to the securing plate proximate the channel; wherein the securing plate is prevented from disengaging from the respective side rail when each of the respective locking members are in a first position and the securing plate is secured to each of the respective side rails; wherein each of the respective locking members are biased toward the first position; and wherein the securing plate can disengage from the respective side rails when each of the respective locking members are in a second position; wherein each of the respective locking members can be moved from the first position to the second position by pulling the pull loop away from the securing plate.
 13. The tonneau cover assembly of claim 12, wherein the cover is flexible.
 14. The tonneau cover assembly of claim 12, wherein the draw cord includes a pull loop having two ends, each of the respective ends being connected to the connecting portion.
 15. The tonneau cover assembly of claim 14, wherein the respective ends of the pull loop are connected to the draw cord at spaced apart locations.
 16. The tonneau cover assembly of claim 14, wherein the pull loop extends through the cover proximate the securing plate.
 17. The tonneau cover assembly of claim 12, wherein each of the respective locking members are biased with a spring.
 18. The tonneau cover assembly of claim 12, wherein the pull loop has a length of from about 6 to about 10 inches.
 19. The tonneau cover assembly of claim 12, wherein the clip can be deformed so as to be force fit into the channel.
 20. The tonneau cover assembly of claim 12, wherein the draw cord includes a clip retaining strap which having two ends, each of the two ends being connected to the draw cord in spaced apart locations so that the clip is unable to slide away from its initial position along the draw cord beyond either of the two spaced apart positions.
 21. The tonneau cover assembly of claim 12, further comprising two loops that interconnect the respective ends of the cord to the respective slide locks.
 22. The tonneau cover assembly of claim 21, wherein a length one of the loops is adjustable so that a length of the cord is adjustable.
 23. A tonneau cover assembly for removable attachment about a top of a perimeter of a cargo box of a pickup truck, the perimeter of the cargo box including a forward end, two opposing sidewalls and a tailgate, the tailgate being positioned rearward of the forward end and having an open position and a closed position, the tonneau cover apparatus comprising: a cover including an opening proximate the tailgate when the tonneau cover assembly is operatively secured to the pickup truck; a support frame for attachment to the cargo box, the support frame having two opposing side rails, each of which can be secured to one of the respective opposing side walls; and a securing plate having first and second ends, the securing plate being attached to the cover, the securing plate being engageable with the respective side rails to secure the cover to the support frame; wherein the securing plate includes a channel and a locking assembly, the locking assembly including two locking members positioned at least partially within the channel and a draw cord interconnecting the two locking members; wherein the draw cord at least partially extends through the opening in the cover; wherein the securing plate is prevented from disengaging from the respective side rail when each of the respective locking members are in a first position and the securing plate is secured to each of the respective side rails; wherein the locking members are biased toward the first position; and wherein the securing plate can disengage from the respective side rails when each of the respective locking members are in a second position; wherein each of the respective locking members can be moved from the first position to the second position by pulling the pull loop away from the securing plate when the securing plate is engaged with the side rails and the respective locking members are each in the first position.
 24. The tonneau cover assembly of claim 23, wherein the cover is flexible.
 25. The tonneau cover assembly of claim 23, wherein the opening is a slit.
 26. The tonneau cover assembly of claim 25, wherein the tonneau cover assembly further includes a grommet secured to the cover proximate the slit and the pull loop passes through the slit and the grommet so that the pull loop can be pulled in order to disengage the securing plate from the side rails.
 27. The tonneau cover assembly of claim 23, wherein each of the respective locking members are biased toward the first position with a spring.
 28. The tonneau cover assembly of claim 23, wherein the draw cord includes a pull loop having two ends, wherein the respective ends are connected to the draw cord in spaced apart locations.
 29. The tonneau cover assembly of claim 23, wherein the pull loop has a length of from about 6 to about 10 inches.
 30. The tonneau cover assembly of claim 23, further comprising two loops that interconnect the respective ends of the draw cord to the respective slide locks.
 31. The tonneau cover assembly of claim 30, wherein a length one of the loops is adjustable so that a length of the cord is adjustable.
 32. The tonneau cover assembly of claim 23, wherein the cord further includes a clip that can secure the cord to the securing plate proximate the channel.
 33. The tonneau cover assembly of claim 32, wherein the clip can be deformed so as to be force fit force fit into the channel.
 34. The tonneau cover assembly of claim 32, wherein the draw cord includes a clip retaining strap which having two ends, each of the two ends being connected to the draw cord in spaced apart locations so that the clip is unable to slide away from its initial position along the draw cord beyond either of the two spaced apart positions. 